Oxygen supply instrument



FIG. 1 is a top perspective view of an oxygen supply instrument of thepresent invention;

FIG. 2 is a front view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a first side view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is a second side view thereof; and,

FIG. 7 is a rear view thereof.

We claim the ornamental design for an oxygen supply instrument, as shownand described.